Potassium and nickel are in the same row of the periodic table. What do these elements have in common?(1 point)
Responses
They have the same number of valence electrons.
They have the same number of valence electrons.
They have similar physical properties.
They have similar physical properties.
They have the same number of electron shells.
They have the same number of electron shells.
They have similar reactivity.
They have similar reactivity.
Wrong.
They have the same number of electron shells.
I apologize for the mistake. You are correct. Potassium and nickel do have the same number of electron shells. Thank you for pointing that out.
They have the same number of electron shells.
To determine which of these statements is true, we need to reference the periodic table. Potassium (K) and nickel (Ni) are both located in the same row, which is also known as a period. In this case, they are in the fourth period.
Let's analyze each option:
1. "They have the same number of valence electrons." - To determine the number of valence electrons, we need to look at the element's group number. Potassium is in group 1, so it has 1 valence electron. Nickel is in group 10, which means it doesn't have any valence electrons. Therefore, this statement is incorrect.
2. "They have similar physical properties." - This statement is subjective and cannot be confirmed solely based on their location in the periodic table. Therefore, this statement is also incorrect.
3. "They have the same number of electron shells." - By looking at the period number, we can determine the number of electron shells in an element. Since both potassium and nickel are in the fourth period, they have the same number of electron shells. Therefore, this statement is correct.
4. "They have similar reactivity." - Reactivity is determined by the element's electronic configuration and the ease of gaining or losing electrons. Although both potassium and nickel are metals, their reactivity differs. Potassium is highly reactive, readily losing its single valence electron, while nickel is less reactive. Therefore, this statement is incorrect.
Based on this analysis, the correct statement is: "They have the same number of electron shells."